To provide an identification system for a work machine which is capable of preventing a setting error, the identification system for a work machine includes: a first control device to control the entirety of a work machine; and a plurality of second control devices to control components of the work machine. The first control device acquires information about the entire vehicle body of the work machine. Each of the second control devices acquires different information about a state of one of the components from that acquired by the other second control devices, on the basis of a installation site of the second control device installed on the work machine. In addition, the second control device sets a function of the second control device on the basis of the information about the state and the information about the entire vehicle body.

An apparatus for retaining an upper pivoting body of a construction machine having a lower traveling body includes a protrusion on a lower surface of the upper pivoting body, a socket portion on an upper side of the lower traveling body that couples with the protrusion, an elastic member on a lower side of the socket portion that elastically supports the socket portion, a first tapered member on a lower side of the elastic member to support the elastic member, a lower surface of the first tapered member having a sloping surface, and a second tapered member on a lower side of the first tapered member. The upper surface of the second tapered member has a sloping surface that makes sliding contact with the first tapered member. The second tapered member lifts the socket portion, through a horizontal movement, to be coupled with the protrusion or lowers the socket portion to be separated from the protrusion.

A hydraulic excavator (1) includes a wireless authentication device (52) performing wireless authentication with a portable key device (51) and a vehicle body controller (48) for starting an engine (15) based on authentication by the wireless authentication device (52) and an operation of a start switch (12). The wireless authentication device (52) transmits a request signal within an authenticable range and performs authentication when it receives an ID code for authentication replied from the portable key device (51) based on the transmitted request signal. The vehicle body controller (48) prohibits driving of a hydraulic actuator (5E, 5F, 5G, 5H, 2E, 2F, 3A) when the portable key device (51) is outside of the authenticable range even if a gate lock lever (13) has been switched to an unlock position.

A working machine includes a traveling device having a traveling frame, a turn base plate supported on the traveling frame and configured to turn around an axis extending in a vertical direction, the turn base plate having an opening portion through which the axis extends, and a swivel joint including an outer sleeve fixed to the turn base plate, and an inner shaft inserted to the opening portion and inserted to the outer sleeve so as to rotate about the axis, the inner shaft being configured to restrictively rotate with respect to the traveling frame. The outer sleeve has a flange portion fixed to the turn base plate on a periphery of the opening portion and covering the opening portion.

The present invention relates to a boom for an earth-moving machine, in particular an excavator, with at least two bearing plates for supporting a cylinder unit, which at least for the most part extend parallel to each other in the longitudinal direction of the boom, wherein the bearing plates have an end-side curvature extending outwardly to the lateral edge of the boom.

The present invention relates to a boom for an earth-moving machine, in particular an excavator, with at least two bearing plates for supporting a cylinder unit, which at least for the most part extend parallel to each other in the longitudinal direction of the boom, wherein the bearing plates have an end-side curvature extending outwardly to the lateral edge of the boom.

A wheel loader includes a console box, a link rod, and a shutoff valve. The console box is disposed on the side of an operator's seat, is able to rotate in the forward and backward direction between an operation position in which the console box is disposed horizontally and a retracted position in which the console box is rotated rearward from the operation position, and has a slot. The link rod is connected at one end to the slot and transmits the rotation of the console box. The link rod is able to rotate a shaft to switch between an open position in which an actuator drive-use hydraulic circuit can be actuated, and a closed position in which the actuator drive-use hydraulic circuit cannot be actuated. A second end of the link rod is linked to the shaft.

A wheel loader includes a console box, a link rod, and a shutoff valve. The console box is disposed on the side of an operator's seat, is able to rotate in the forward and backward direction between an operation position in which the console box is disposed horizontally and a retracted position in which the console box is rotated rearward from the operation position, and has a slot. The link rod is connected at one end to the slot and transmits the rotation of the console box. The link rod is able to rotate a shaft to switch between an open position in which an actuator drive-use hydraulic circuit can be actuated, and a closed position in which the actuator drive-use hydraulic circuit cannot be actuated. A second end of the link rod is linked to the shaft.

The present disclosure relates to a turntable assembly and an engineering mechanical equipment. A turntable assembly for an engineering mechanical equipment includes: a turntable body; a first rotating mechanism connected to the turntable body and configured to cause the turntable body to rotate relative to an undercarriage of the engineering mechanical equipment; and a second rotating mechanism connected to the turntable body and configured to cause an upper work device of the engineering mechanical equipment to rotate relative to the turntable body. An axis of rotation of the first rotating mechanism is not co-linear with an axis of rotation of the second rotating mechanism. The second rotating mechanism includes a rotating body for connecting the upper work device. At least two hinge points arranged spaced apart along the axis of rotation of the second rotating mechanism are provided between the rotating body and the turntable body.

A locking mechanism for heavy equipment having a first structure moveable relative to a second structure, the locking mechanism having an actuator mechanism, coupled to one of the first structure and the second structure, operable between a deployed position and a retracted position, a biasing member, a carriage member operable between a restricted position, in response to the actuator being in the retracted position, and an extended position. The biasing member is configured to bias the carriage member toward the extended position in response to the actuator mechanism being in a deployed position and the carriage member is configured to prevent relative movement between the first structure and the second structure in the extended position.